发动机电磁气门驱动过渡过程闭环控制研究

Closed-loop Control on Transition of Electromagnetic Valve Actuation for Engines

由于难以采用传统的闭环控制方法控制发动机电磁气门驱动(EVA),在大量开环试验的基础上提出一个EVA过渡过程闭环控制的新方案,该方案由两个部分组成:运动过程控制和落座控制。运动过程控制能实现较小的落座速度,落座控制能保证落座的成功。在研制的EVA上进行的试验表明,采用这种控制方法能够得到小于0.2 m/s的落座速度,但EVA连续动作时平均落座速度大于单次动作的落座速度。

As the conventional closed-loop control method was unfeasible for electromagnetic valve actuation （EVA） control, a new closed-loop control method for EVA transition was proposed based on a lot of experiments. The control consisted of two portions. The first portion was armature motion control, which was aiming to a low seating velocity. The second portion was seating control, which was to ensure the landing of the armature （valve）. Experiment on this EVA shows that seating velocity of less than 0.2 m/s could be reached by this control method. However, there was a higher seating velocity for EVA continuously working than that for EVA transition in single-acting.